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| Criterion |  DevOps Blameless Postmortem |  Systems Thinking Iceberg Model |  DevOps Incident Command |
|---|---|---|---|
Purposedifferent | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | The Iceberg Model separates visible events from patterns, structures, and mental models. This turns a single observation into a deeper understanding of why a problem keeps recurring. | During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-90 min | 30-60 min | As needed |
Participantsdifferent | 3-12 | 2-10 | 4-15 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Iceberg Worksheet, Pattern Notes, Intervention Ideas | Incident Log, Action Tracker, Stakeholder Updates |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Systems thinkingRoot causePatterns | IncidentOperationsReliability |
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